Patent · US Active

Heating device for producing carbon fibers

US10337125B2 · kind B2 · utility

0Cited by

8References

14Claims

0Family size

Assignees

CLARIANT INTERNATIONAL LTD · CH
LINN HIGH THERM GMBH · DE

Inventors

Daniel Decker · Castle Rock, US
Michael Woelki · Stow, US
Phillip Schwerdt · Mainz, DE
Horst Linn · Eschenfelden, DE
Rudolf Linn · Hersbruck, DE
Juergen Kunstmann · Bad Soden, DE

Key dates

Filing date	Feb 27, 2015
Grant date	Jul 2, 2019
Priority date	—
Expiry date	Feb 27, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH05B6/44
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A heating device for producing carbon fibers from a thread-shaped fiber starting material, wherein the heating device has a central tubular induction heating element through which the fiber starting material is moved. The tubular induction heating element is surrounded by thermal insulation. At least one mid- to high-frequency induction coil is provided outside the thermal insulation, and an inert gas flows through the central induction heating element, in particular, for carbonizing and/or graphitizing the fiber starting material. For energy optimization, a first and a second tube element is provided on the outer side of the thermal insulation. The elements are made of material that is transparent to the induction field of the mid- to high-frequency induction coil and are spaced apart from one another by an annular gap through which the inert gas flows.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.